Modulecabal-install-solver-3.18.1.0Haskell2010

Distribution.Solver.Modular.RetryLog

newtypenewtype RetryLog step fail done

Progress as a difference list that allows efficient appends at failures.

valuetoProgress :: RetryLog step fail done -> Progress step fail done

O(1). Convert a RetryLog to a Progress.

valuefromProgress :: Progress step fail done -> RetryLog step fail done

O(N). Convert a Progress to a RetryLog.

valuemapFailure

O(1). Apply a function to the failure value in a log.

valueretry

O(1). If the first log leads to failure, continue with the second.

valuefailWith :: step -> fail -> RetryLog step fail done

O(1). Create a log with one message before a failure.

valuesucceedWith :: step -> done -> RetryLog step fail done

O(1). Create a log with one message before a success.

valuecontinueWith :: step -> RetryLog step fail done -> RetryLog step fail done

O(1). Prepend a message to a log.

valuetryWith

O(1). Prepend the given message and Enter to the log, and insert Leave before the failure if the log fails.